IOTA/IOTA-ES occultation update for (1031) Arctica / TYC 0095-00489-1 event on 2022 Dec 17, 11:18 UT Visible from USA, SE Asia Summary ------- On 2022 Dec 17 UT, the 77.7 km diameter asteroid (1031) Arctica will occult a 9.6 mag star in the constellation Taurus for observers along a path across USA, SE Asia. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.56 mag to 14.09 mag (the magnitude of the asteroid) for at most 5.930 seconds. This update is based on, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 99 * date and approx. time of event: 2022 Dec 17, 11:10 - 2022 Dec 17, 11:25 * geocentric midpoint of event [JD]: 2459930.97098029 * magnitude of target star: 9.55 * magnitude drop [mag]: 4.56 * estimated maximum duration [s]: 5.930 * Moon: 40 % sunlit, 117° distance * Sun: 159° distance * rough path description: USA, SE Asia The occultation path -------------------- * approximate projected width [km]: 87 * 1 sigma uncertainty interval [path widths]: +/- 0.23 * 1 sigma uncertainty interval [seconds]: +/- 2.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.024, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.025", 0.002", 99°) * approx speed of asteroid's shadow [km/s]: 13.1000 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0095-00489-1 by 1031 Arctica on 2022 Dec 17 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude 83 0 0 8 14 43 11 25 27.6 0 83 10 8 38 30 7 51 1 8 49 22 7 40 14 .... 84 0 0 8 22 2 11 25 27.5 1 84 9 8 45 50 7 58 20 8 56 43 7 47 33 -0.35 85 0 0 8 29 44 11 25 27.2 2 84 8 8 53 33 8 6 1 9 4 26 7 55 13 -0.41 86 0 0 8 37 48 11 25 26.7 3 84 7 9 1 38 8 14 3 9 12 32 8 3 16 -0.44 87 0 0 8 46 14 11 25 26.1 4 84 6 9 10 5 8 22 28 9 20 59 8 11 40 -0.45 88 0 0 8 55 2 11 25 25.3 5 84 5 9 18 54 8 31 15 9 29 48 8 20 26 -0.46 89 0 0 9 4 11 11 25 24.3 6 84 4 9 28 4 8 40 23 9 38 59 8 29 33 -0.47 90 0 0 9 13 42 11 25 23.2 7 84 3 9 37 36 8 49 53 9 48 32 8 39 2 -0.47 91 0 0 9 23 34 11 25 21.9 8 85 2 9 47 30 8 59 43 9 58 26 8 48 53 -0.48 92 0 0 9 33 47 11 25 20.4 9 85 1 9 57 44 9 9 55 10 8 41 8 59 4 -0.48 93 0 0 9 44 21 11 25 18.8 10 85 0 10 8 19 9 20 28 10 19 17 9 9 36 -0.48 94 0 0 9 55 15 11 25 17.1 11 85 -1 10 19 15 9 31 21 10 30 13 9 20 28 -0.48 95 0 0 10 6 30 11 25 15.1 12 85 -2 10 30 32 9 42 34 10 41 30 9 31 41 -0.48 96 0 0 10 18 5 11 25 13.0 13 86 -2 10 42 8 9 54 8 10 53 8 9 43 14 -0.48 97 0 0 10 30 1 11 25 10.8 14 86 -3 10 54 5 10 6 1 11 5 5 9 55 7 -0.49 98 0 0 10 42 15 11 25 8.4 15 86 -4 11 6 21 10 18 15 11 17 22 10 7 20 -0.49 99 0 0 10 54 50 11 25 5.8 16 86 -5 11 18 57 10 30 48 11 29 58 10 19 52 -0.49 100 0 0 11 7 43 11 25 3.1 17 86 -6 11 31 52 10 43 39 11 42 54 10 32 43 -0.49 101 0 0 11 20 56 11 25 0.2 18 87 -7 11 45 6 10 56 50 11 56 9 10 45 53 -0.49 102 0 0 11 34 27 11 24 57.2 19 87 -8 11 58 39 11 10 20 12 9 43 10 59 22 -0.49 103 0 0 11 48 17 11 24 54.0 20 87 -9 12 12 30 11 24 8 12 23 35 11 13 9 -0.49 104 0 0 12 2 24 11 24 50.7 21 87 -10 12 26 40 11 38 14 12 37 45 11 27 15 -0.49 105 0 0 12 16 50 11 24 47.2 22 88 -11 12 41 7 11 52 38 12 52 13 11 41 38 -0.49 106 0 0 12 31 33 11 24 43.6 23 88 -12 12 55 52 12 7 20 13 6 59 11 56 19 -0.49 107 0 0 12 46 34 11 24 39.8 24 88 -13 13 10 54 12 22 18 13 22 2 12 11 17 -0.49 108 0 0 13 1 51 11 24 35.9 25 89 -14 13 26 14 12 37 34 13 37 22 12 26 32 -0.49 109 0 0 13 17 25 11 24 31.9 26 89 -15 13 41 49 12 53 6 13 52 59 12 42 3 -0.49 110 0 0 13 33 16 11 24 27.7 27 89 -16 13 57 42 13 8 55 14 8 52 12 57 51 -0.49 111 0 0 13 49 22 11 24 23.3 28 90 -17 14 13 50 13 25 0 14 25 1 13 13 55 -0.49 112 0 0 14 5 44 11 24 18.8 29 90 -18 14 30 14 13 41 20 14 41 25 13 30 14 -0.49 113 0 0 14 22 22 11 24 14.2 30 90 -19 14 46 53 13 57 56 14 58 5 13 46 49 -0.49 114 0 0 14 39 14 11 24 9.5 31 91 -20 15 3 47 14 14 46 15 15 0 14 3 39 -0.49 115 0 0 14 56 21 11 24 4.6 32 91 -21 15 20 56 14 31 51 15 32 10 14 20 43 -0.49 116 0 0 15 13 42 11 23 59.6 33 92 -22 15 38 19 14 49 11 15 49 34 14 38 2 -0.49 117 0 0 15 31 17 11 23 54.5 34 92 -23 15 55 55 15 6 44 16 7 11 14 55 34 -0.49 118 0 0 15 49 6 11 23 49.2 34 93 -24 16 13 46 15 24 31 16 25 2 15 13 20 -0.49 119 0 0 16 7 7 11 23 43.9 35 93 -25 16 31 49 15 42 31 16 43 7 15 31 19 -0.49 120 0 0 16 25 21 11 23 38.4 36 94 -26 16 50 5 16 0 43 17 1 23 15 49 31 -0.49 121 0 0 16 43 48 11 23 32.8 37 94 -27 17 8 33 16 19 8 17 19 52 16 7 55 -0.49 122 0 0 17 2 27 11 23 27.0 38 95 -28 17 27 14 16 37 45 17 38 34 16 26 31 -0.49 123 0 0 17 21 17 11 23 21.2 39 96 -29 17 46 6 16 56 33 17 57 26 16 45 19 -0.49 124 0 0 17 40 18 11 23 15.3 40 96 -30 18 5 8 17 15 33 18 16 30 17 4 18 -0.49 125 0 0 17 59 29 11 23 9.2 41 97 -31 18 24 22 17 34 43 18 35 44 17 23 27 -0.49 126 0 0 18 18 51 11 23 3.1 42 97 -32 18 43 45 17 54 3 18 55 8 17 42 46 -0.49 127 0 0 18 38 23 11 22 56.8 43 98 -33 19 3 18 18 13 33 19 14 42 18 2 16 -0.49 128 0 0 18 58 4 11 22 50.5 43 99 -34 19 23 1 18 33 13 19 34 26 18 21 55 -0.49 129 0 0 19 17 54 11 22 44.0 44 100 -35 19 42 53 18 53 1 19 54 18 18 41 42 -0.50 130 0 0 19 37 52 11 22 37.5 45 100 -36 20 2 52 19 12 58 20 14 18 19 1 38 -0.50 131 0 0 19 57 59 11 22 30.9 46 101 -37 20 23 0 19 33 3 20 34 27 19 21 43 -0.50 132 0 0 20 18 13 11 22 24.2 47 102 -38 20 43 16 19 53 15 20 54 43 19 41 54 -0.50 133 0 0 20 38 33 11 22 17.4 48 103 -39 21 3 38 20 13 35 21 15 6 20 2 13 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35 24 45 3 25 47 9 24 33 36 -0.50 147 0 0 25 31 27 11 20 35.9 57 120 -52 25 56 46 25 6 13 26 8 21 24 54 45 -0.50 148 0 0 25 52 37 11 20 28.3 58 122 -53 26 17 57 25 27 23 26 29 32 25 15 55 -0.50 149 0 0 26 13 47 11 20 20.7 59 124 -54 26 39 8 25 48 32 26 50 43 25 37 4 -0.50 150 0 0 26 34 56 11 20 13.1 59 125 -55 27 0 18 26 9 41 27 11 53 25 58 12 -0.50 151 0 0 26 56 4 11 20 5.4 60 127 -55 27 21 26 26 30 48 27 33 2 26 19 19 -0.50 152 0 0 27 17 10 11 19 57.8 60 129 -56 27 42 32 26 51 54 27 54 8 26 40 24 -0.50 153 0 0 27 38 13 11 19 50.1 60 131 -57 28 3 36 27 12 57 28 15 12 27 1 28 -0.50 154 0 0 27 59 14 11 19 42.4 61 133 -58 28 24 37 27 33 57 28 36 13 27 22 28 -0.50 155 0 0 28 20 12 11 19 34.8 61 135 -59 28 45 35 27 54 55 28 57 11 27 43 25 -0.50 156 0 0 28 41 5 11 19 27.1 62 137 -60 29 6 29 28 15 48 29 18 5 28 4 19 -0.50 157 0 0 29 1 55 11 19 19.4 62 139 -61 29 27 18 28 36 38 29 38 55 28 25 8 -0.50 158 0 0 29 22 40 11 19 11.7 62 141 -61 29 48 4 28 57 23 29 59 40 28 45 54 -0.50 159 0 0 29 43 21 11 19 4.0 62 143 -62 30 8 44 29 18 4 30 20 20 29 6 34 -0.50 160 0 0 30 3 55 11 18 56.4 63 145 -63 30 29 18 29 38 39 30 40 55 29 27 9 -0.51 161 0 0 30 24 25 11 18 48.7 63 148 -64 30 49 47 29 59 8 31 1 24 29 47 38 -0.51 162 0 0 30 44 47 11 18 41.1 63 150 -65 31 10 10 30 19 31 31 21 46 30 8 2 -0.51 163 0 0 31 5 4 11 18 33.5 63 152 -65 31 30 26 30 39 48 31 42 2 30 28 18 -0.51 164 0 0 31 25 13 11 18 25.9 63 154 -66 31 50 35 30 59 57 32 2 11 30 48 28 -0.51 165 0 0 31 45 15 11 18 18.3 63 157 -67 32 10 37 31 20 0 32 22 12 31 8 31 -0.51 166 0 0 32 5 9 11 18 10.8 63 159 -67 32 30 30 31 39 55 32 42 6 31 28 26 -0.51 167 0 0 32 24 56 11 18 3.3 63 161 -68 32 50 16 31 59 41 33 1 51 31 48 13 -0.51 168 0 0 32 44 33 11 17 55.8 63 163 -69 33 9 53 32 19 20 33 21 28 32 7 52 -0.51 169 0 0 33 4 2 11 17 48.4 63 166 -69 33 29 21 32 38 49 33 40 56 32 27 22 -0.51 170 0 0 33 23 22 11 17 41.0 63 168 -70 33 48 40 32 58 10 34 0 14 32 46 43 -0.51 171 0 0 33 42 32 11 17 33.6 63 170 -71 34 7 50 33 17 21 34 19 23 33 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46 47 13 46 0 4 46 58 0 45 49 22 -0.52 -100 0 0 46 20 33 11 11 7.0 10 269 -31 46 44 10 45 57 0 46 54 58 45 46 18 -0.52 - 99 0 0 46 17 13 11 11 5.9 9 270 -30 46 40 51 45 53 40 46 51 40 45 42 57 -0.53 - 98 0 0 46 13 37 11 11 4.9 8 271 -30 46 37 16 45 50 3 46 48 5 45 39 20 -0.53 - 97 0 0 46 9 45 11 11 4.0 8 272 -29 46 33 25 45 46 10 46 44 14 45 35 27 -0.53 - 96 0 0 46 5 36 11 11 3.1 7 272 -28 46 29 17 45 42 1 46 40 6 45 31 17 -0.53 - 95 0 0 46 1 11 11 11 2.4 6 273 -28 46 24 53 45 37 35 46 35 42 45 26 51 -0.54 - 94 0 0 45 56 30 11 11 1.7 6 274 -27 46 20 12 45 32 52 46 31 2 45 22 8 -0.54 - 93 0 0 45 51 32 11 11 1.1 5 274 -26 46 15 15 45 27 53 46 26 5 45 17 8 -0.55 - 92 0 0 45 46 17 11 11 0.5 4 275 -25 46 10 1 45 22 38 46 20 52 45 11 52 -0.56 - 91 0 0 45 40 46 11 11 0.1 3 276 -25 46 4 31 45 17 5 46 15 22 45 6 19 -0.57 - 90 0 0 45 34 58 11 10 59.7 3 277 -24 45 58 44 45 11 16 46 9 36 45 0 30 -0.58 - 89 0 0 45 28 53 11 10 59.4 2 277 -23 45 52 41 45 5 11 46 3 33 44 54 24 -0.61 - 88 0 0 45 22 32 11 10 59.2 1 278 -23 45 46 21 44 58 48 45 57 14 44 48 1 -0.67 - 87 0 0 45 15 54 11 10 59.1 1 279 -22 45 39 44 44 52 9 45 50 38 44 41 21 -0.87 - 86 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 45 43 45 .. .. .. .... Uncertainty in time = +/- 3 secs Prediction of 2022 Dec 1.1 Data for the target star ------------------------ * name: TYC 0095-00489-1 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 42 59.3222 DE: +06 34 45.965 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 42 59.3221 DE: +06 34 45.963 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 9.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1031) Arctica asteroid class: approx. diameter [km]: 78 approx. diameter ["]: 0.051 distance from Earth [AU]: 2.10580 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#63 date of fit: 2022 Nov 22 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.025", 0.002", 98.96° remarks: * orbital elements for (1031)Arctica : Mean anomaly = 274.1350158936 deg Arg. of pericenter = 310.4202365906 deg Long. of node = 218.6199908264 deg Inclination = 17.6383993065 deg Eccentricity = 0.0595061168 Semimajor axis = 3.0451710037 AU Perihelion dist = 2.8639647021 AU Mag: H = 9.53, G = 0.15 Epoch of elements : MJD 59930.47083333 TDT (2022 Dec 17.4708) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#632022Nov22,5.93,2022,12,17,11.303527,-0.142840,0.426892,-7.009846,-2.352310,0.001308,0.001749,0.000001,0.000000 175.4370,6.6229,9.46,-23.36,False TYC 0095-00489-1,4.71647839,6.5794347,0.00,9.55,0.00,0.0,0,,4.73718709,6.6228836,4.56,0.00,0,0,0 1031,Arctica,14.09,77.7,2.1058,0,0,-1.964,-9.82,,3.8,0 0,274.0477,2022,12,17,310.4202,218.6200,17.6384,0.05951,3.04517,2.86396,9.55,5.0,0.15 1.228,0.0247,0.0024,99,0.0116,Known errors,-1.00,-1,-1,-1 20221217_0489-1,59914.08 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Dec 01, 02:01 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org